Dielectric Relaxation Study on TiO2 Based Nanocomposite Blend Polymer Electrolytes

2014 ◽  
Vol 807 ◽  
pp. 135-142
Author(s):  
C. Ambika ◽  
G. Hirankumar
Keyword(s):  
Polymer Electrolytes ◽  
Methanesulfonic Acid ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Solution Casting ◽  
Casting Technique ◽  
Relaxation Study ◽  
Maximum Conductivity ◽  
Solution Casting Technique ◽  
Blend Polymer

Nanocomposite solid polymer electrolytes comprise of PMMA (poly methyl methacrylate), PVP (poly vinyl pyrolidone), MSA (methanesulfonic acid) and TiO2 as nanofiller were prepared by solution casting technique at different compositions. Sample with 1 mol% incorporated TiO2 has shown maximum conductivity and its value was found as 2.82 ×10-5 S/cm. The value of conductivity has been enhanced to about 31% upon the addition of nanofiller. The relaxation time for all the prepared composites as well as for the composite having maximum conductivity at various isotherms have been calculated from the loss tangent plot. The frequency and temperature dependence of dielectric constant and dielectric loss nanocomposite solid polymer electrolytes have also been studied. The modulus analysis confirms the non-Debye type formalism in the prepared composites.

scholarly journals Vibrational, electrical, dielectric and optical properties of PVA-LiPF6 solid polymer electrolytes

2019 ◽  
Vol 37 (3) ◽  
pp. 331-337 ◽  
Author(s):  
S. Abarna ◽  
G. Hirankumar
Keyword(s):  
Polymer Electrolytes ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Conductivity Enhancement ◽  
Casting Technique ◽  
Vis Spectroscopy ◽  
Maximum Conductivity ◽  
Solution Casting Technique ◽  
Ft Ir ◽  
Dielectric And Optical Properties

AbstractSolid polymer electrolytes based on polyvinyl alcohol (PVA) doped with LiPF6 have been prepared using solution casting technique. Electrical properties of prepared electrolyte films were analyzed using AC impedance spectroscopy. The ionic conductivity was found to increase with increasing salt concentration. The maximum conductivity of 8.94 × 10−3 S·cm−1 was obtained at ambient temperature for the film containing 20 mol% of LiPF6. The conductivity enhancement was correlated to the enhancement of available charge carriers. The formation of a complex between the polymer and salt was confirmed by Fourier transform infrared spectroscopy (FT-IR). The optical nature of the polymer electrolyte films was analyzed through UV-Vis spectroscopy.

Characterization of Plasticized PMMA-LiClO4 Solid Polymer Electrolytes

2012 ◽  
Vol 585 ◽  
pp. 185-189 ◽  
Author(s):  
Rajni Sharma ◽  
Anjan Sil ◽  
Subrata Ray
Keyword(s):  
Ionic Conductivity ◽  
Polymer Electrolytes ◽  
Thermal Analyses ◽  
Impedance Analysis ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Casting Technique ◽  
Ac Impedance Analysis ◽  
Solution Casting Technique

In the present work, the effect of Li salt i.e. LiClO4 contained in composite plasticizer (PC+DEC) with three different concentrations on ionic transport and other electrochemical properties of PMMA based gel polymer electrolytes synthesized has been investigated. The electrolytes have been synthesized by solution casting technique by varying the wt (%) of salt and plasticizer. The formation of polymer-salt complexes and their structural characterization have been carried out by FTIR spectroscopic and XRD analyses. The room temperature ionic conductivity of the electrolyte composition 0.6PMMA-0.125(PC+DEC)-0.15LiClO4 (wt %) has been found to be maximum whose magnitude is 0.40×10-5 S/cm as determined by ac impedance analysis. The temperature dependent ionic conductivity of electrolyte sample0.6PMMA-0.125(PC+DEC)-0.15LiClO4 has further been investigated. Thermal analyses of electrolyte samples of all three compositions have also been done.

scholarly journals Effect of Zirconium Oxide Nanofiller and Dibutyl Phthalate Plasticizer on Ionic Conductivity and Optical Properties of Solid Polymer Electrolyte

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Siti Mariah Mohd Yasin ◽  
Suriani Ibrahim ◽  
Mohd Rafie Johan
Keyword(s):  
Zirconium Oxide ◽  
Dibutyl Phthalate ◽  
Solid Polymer Electrolytes ◽  
Localized States ◽  
Solid Polymer ◽  
Casting Technique ◽  
Phthalate Plasticizer ◽  
Maximum Conductivity ◽  
Solution Casting Technique ◽  
Poly Ethylene

New solid polymer electrolytes (SPE) based on poly(ethylene oxide) (PEO) doped with lithium trifluoromethanesulfonate (LiCF3SO3), dibutyl phthalate (DBP) plasticizer, and zirconium oxide (ZrO2) nanoparticles were prepared by solution-casting technique. The conductivity was enhanced by addition of dibutyl phthalate (DBP) plasticizer and ZrO2nanofiller with maximum conductivity(1.38×10-4 Scm-1). The absorption edge and band gap values showed decreases upon addition of LiSO3CF3, DBP, and ZrO2due to the formation of localized states in the SPE and the degree of disorder in the films increased.

The Investigation on Ionic Conduction of PEMA Based Solid Polymer Electrolytes

2010 ◽  
Vol 93-94 ◽  
pp. 381-384
Author(s):  
Shahrul Amir ◽  
Mohamed Nor Sabirin ◽  
Ri Hanum Yahaya Subban
Keyword(s):  
Polymer Electrolytes ◽  
Ionic Conduction ◽  
Lithium Perchlorate ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
X Ray Diffraction ◽  
Conducting Film ◽  
X Ray ◽  
Casting Technique ◽  
Solution Casting Technique

Solid polymer electrolytes comprising of various weight ratios of poly(ethyl methacrylate) (PEMA) and lithium perchlorate (LiClO4) salt were prepared via solution casting technique using N,N-Dimethylformamide (DMF) as the solvent. The conductivity values of the electrolytes were determined utilizing Solatron 1260. The highest conductivity obtained is in the order of 10-6 S cm-1. Structural properties of the electrolytes were investigated by X-ray diffraction and the results show that the highest conducting film is the most amorphous.

scholarly journals Preparation and Characterization of Ammonium Ceric Nitrate Doped PVDF Polymer Electrolytes

2019 ◽  
Vol 8 (4S2) ◽  
pp. 903-906
Keyword(s):  
Polymer Electrolytes ◽  
Vinylidene Fluoride ◽  
Impedance Analysis ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Casting Technique ◽  
Ac Impedance Analysis ◽  
Poly Vinylidene Fluoride ◽  
Solution Casting Technique ◽  
Ammonium Ceric Nitrate

Poly [vinylidene fluoride] (PVdF): Ammonium ceric nitrate ((NH4)2Ce(NO3)6) based Proton conducting solid polymer electrolytes (SPEs) are prepared by solution casting technique. Polymer electrolytes are characterized by several techniques. The Structural property of the electrolytes are confirmed by XRD. The functional groups present in polymer electrolytes are confirmed by FTIR. The conductivity of the polymer electrolytes are calculated by using AC impedance analysis. The Maximum ionic conductivity is obtained for 2wt% of ammonium ceric nitrate doped polymer electrolyte.

Electrical Properties of Starch/PEO Blend Polymer Electrolytes

2015 ◽  
Vol 754-755 ◽  
pp. 29-33
Author(s):  
K. Ramly ◽  
A.S.A. Khiar
Keyword(s):  
Electrical Properties ◽  
Impedance Spectroscopy ◽  
Ammonium Nitrate ◽  
Polymer Electrolytes ◽  
Room Temperature ◽  
Solution Casting ◽  
Casting Technique ◽  
Solution Casting Technique ◽  
Blend Polymer

Films of starch/PEO blends were prepared via solution casting technique and their properties with different amount of ammonium nitrate, NH4NO3were compared. The measurement of conductivity at room temperature were carried out using impedance spectroscopy. The highest conductivity calculated is found to be 2.81±0.46 x 10-7Scm-1with addition of 35wt% NH4NO3 .

scholarly journals Dielectric properties and conductivity of PVdF-co-HFP/LiClO4 polymer electrolytes

2018 ◽  
Vol 96 (7) ◽  
pp. 786-791 ◽  
Author(s):  
Kemal Ulutaş ◽  
Ugur Yahsi ◽  
Hüseyin Deligöz ◽  
Cumali Tav ◽  
Serpil Yılmaztürk ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Dielectric Properties ◽  
Dielectric Loss ◽  
Polymer Electrolytes ◽  
Room Temperature ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Maximum Conductivity

In this study, it was aimed to prepare a series of PVdF-co-HFP based electrolytes with different LiClO4 loadings and to investigate their chemical and electrical properties in detail. For this purpose, PVdF-co-HFP based electrolytes with different LiClO4 loadings (1–20 weight %) were prepared using solution casting method. X-ray diffraction (XRD), differential scanning calorimetry, and thermogravimetric (TGA) –differential thermal and dielectric spectroscopy analysis of PVdF-co-HFP/LiClO4 were performed to characterize their structural, thermal, and dielectric properties, respectively. XRD results showed that the diffraction peaks of PVdF-co-HFP/LiClO4 electrolytes broadened and decreased with LiClO4. TGA patterns exhibited that PVdF-co-HFP/LiClO4 electrolytes with 20 wt % of LiClO4 had the lowest thermal stability and it degraded above 473 K, which is highly applicable for solid polymer electrolytes. Dielectric constant, dielectric loss, and conductivities were calculated by measuring capacitance and dielectric loss factor of PVdF-co-HFP/LiClO4 in the range from 10 mHz to 20 MHz frequencies at room temperature. In consequence, conductivities of PVdF-co-HFP/LiClO4 increased significantly with frequency for low loading of LiClO4 while they only slightly changed with higher LiClO4 addition. On the other hand, dielectric constant values of PVdF-co-HFP/LiClO4 films decreased with frequency whereas they rose with LiClO4 addition. The dielectric studies showed an increase in dielectric constant and dielectric loss with decreasing frequency. This result was attributed to high contribution of charge accumulation at the electrode–electrolyte interface. The electrolyte showed the maximum conductivity of 8 × 10−2 S/cm at room temperature.

A promising PMHS/PEO blend polymer electrolyte for all-solid-state lithium ion batteries

2018 ◽  
Vol 47 (42) ◽  
pp. 14932-14937 ◽  
Author(s):  
Yi-Jing Li ◽  
Chao-Ying Fan ◽  
Jing-Ping Zhang ◽  
Xing-Long Wu
Keyword(s):  
Solid State ◽  
Lithium Ion Batteries ◽  
Polymer Electrolyte ◽  
Lithium Ion ◽  
Solution Casting ◽  
Casting Technique ◽  
Solution Casting Technique ◽  
Blend Polymer Electrolyte ◽  
Blend Polymer

A novel PEO based polymer electrolyte prepared by the solution casting technique for use in all-solid-state lithium ion batteries.

Effect of Filler Type on the Electrical Properties of Hexanoyl Chitosan-Based Polymer Electrolytes

2013 ◽  
Vol 832 ◽  
pp. 224-227 ◽  
Author(s):  
Nurul Hazwani Aminuddin Rosli ◽  
F.H. Muhammad ◽  
Chin Han Chan ◽  
Tan Winie
Keyword(s):  
Electrical Properties ◽  
Polymer Electrolytes ◽  
Preliminary Investigation ◽  
Lithium Perchlorate ◽  
Electrolyte System ◽  
Casting Technique ◽  
Nanocomposite Polymer ◽  
Hexanoyl Chitosan ◽  
Maximum Conductivity ◽  
Solution Casting Technique

A preliminary investigation of polymer electrolyte based on hexanoyl chitosan, lithium perchlorate (LiClO4) and various filler additives are described in this paper. Hexanoyl chitosan-based nanocomposite polymer electrolytes were prepared using solution casting technique. The effect of filler addition and type of filler on the electrical properties of the prepared electrolyte system was investigated by impedance spectroscopy (IS). The maximum conductivity of 3.06 × 10-4 S cm-1 and 1.96 × 10-4 S cm-1 were achieved for the hexanoyl chitosan-LiClO4-TiO2 and hexanoyl chitosan-LiClO4-SiO2 electrolyte system, respectively. The variations in conductivity observed were discussed quantitatively using the Rice and Roth model from which the concentration of free ions and their mobility were calculated.

Proton Conducting Carboxy Methyl Cellulose Solid Polymer Electrolytes Doped with Citric Acid

2014 ◽  
Vol 895 ◽  
pp. 130-133 ◽  
Author(s):  
W.F. Ng ◽  
Mui Nyuk Chai ◽  
M.I.N. Isa
Keyword(s):  
Citric Acid ◽  
Polymer Electrolytes ◽  
Methyl Cellulose ◽  
Proton Conductor ◽  
Transference Number ◽  
Ionic Mobility ◽  
Solid Polymer Electrolytes ◽  
Electrical Impedance Spectroscopy ◽  
Solid Polymer ◽  
Casting Technique

Novel solid polymer electrolytes containing carboxy methylcellulose (CMC) are prepared based on the vary concentration (0 - 45 wt. %) of citric acid (CA) via solution casting technique. The ion conductivity is studied by electrical impedance spectroscopy and the ionic mobility, μ and the diffusion coefficient, D is investigated by transference number measurement. The highest ionic conductivity at room temperature (303K) is 4.38 x 10-7 S cm-1 for 40 wt. % CA. The values of μ+ and D+ were higher than μ- and D- respectively, implying that the CMC-CA solid polymer electrolytes are proton conductor.

Sign in / Sign up

Export Citation Format

Share Document